Drink mixer



L. MYERS DRINK MIXER 2 Sheets-Sheet 1 March 5, 1940.

Original Filed May 29, 19:57

LOU/5 MYERS INVENTOR.

'1 I I 1 a L BY ' 4 Arrozmz March 5, 1940.

L. MYERS DRINK MIXER Original Filed May 29, 1937 2 Sheets-Sheet 2 4 00/5 MK6R5 mmvnm ATTORNEY Patented Mar. 5, 1940 UNITED STATES DRINK ltflXER Louis Myers, Galesburg, 111., assignor to David Gensburg, ChicagoJll.

Application May 29, 1937, Serial-No. 145,499 \lfenewed June 13, 1939 8 Claims. (01. 259-106) The present invention relates to electrically operated apparatus for mixing fluids, and more particularly drinks. Among the objects of this invention are to provide an apparatus of the character indicated in which'means is provided for clamping the mixing cup against the support and holding it in position thereon; to provide, in an apparatus of the character indicated, a yieldably mounted supporting plate for supporting the mixing cup in position; to provide, in an apparatus of the character indicated, mechanism for clamping the mixing cup in position and simultaneously turning on the current to the electric motor; to provide, in an apparatus of the character indicated, a'driving connection between the motor and the mixing shaft which will automatically keep the operating parts in engagement and will take up any slack due to wear of the driving parts; to provide a particularly effective combina- M, tion'of mixing cup and agitator;-and such further objects, advantages, and capabilities as will hereafter appear and as are inherent in the construction disclosed herein. My. invention further resides in the combination, construction, and ar 25 rangement of parts illustrated in the accompanying drawings and, while I have shown therein what is now regarded as the preferred embodiment of this invention, I desire the same to be understood as illustrative only and not to be 80 interpreted in a limiting sense.

In the drawings annexed hereto and forming a part hereof,

Fig. 1 represents a vertical section through an apparatus embodying my present invention, said 35 section being represented as being taken approximately centrally of the apparatus;

Fig. 2 represents a front elevation and Fig. 3 a plan of an apparatus embodying my present invention;

40 Fig. 4 represents a side elevation of a cup constituting a part of this invention.

This invention is in the nature of an improvement upon the structure shown in my co-pending application, Serial No. 102,365, filed September 45 24, 1936. The structure of this invention comprises supporting means, a novel cup, and agitatingmeans. Essentially, the supporting means comprises a standard I and a headi. Mounted on the standard I, by means of a pivot 3, is a lever 50 4 which has an eye 5 formed adjacent its outer end. A pin 6 extends through this eye and is rigidly attached to a plate 'I which is somewhat concave upwardly for the reception of a mixing cup which may be of metal, glass, porcelain, or

55 other material. This mixing cup is denoted by the numeral 8. Between the arm 4 and the plate I is resilient means 9 which bears, upon one side,

against the arm 4 and, upon the-opposite side,

against the plate I. This resilient means is shown as being centrally apertured for the recep- 5 tion of the pin 6 and as having four arms extending outwardly from a central body to bear against the under side of the plate I. -When the mixing cup 8 is put into position and the lever 4 is brought up to bring the plate 1 into position 10 against the bottom of the mixing cup, the resilient means 91s compressed somewhat and,,when the lever is secured in'the position shown in Fig. 1, the resilient means holds the cup 8 against the member III on the under side of the head. This member is of a more yielding material than metal for the purpose of preventing chipping of glass held against it.

A bracket II is mounted on the inside of the standard I and carries an electric switch I! having a push button l3 located in a position to be engaged by the inner end of the lever 4 as the latter is turned about its pivot 3. A crank having an outer arm l4 and an inner arm I5 is mounted in a wall of the standard I. A pin I6 is carried by the arm l5 and, itself, carries a sleeve H which rides in a slot H3 in the inner end portion of the lever 4. Therefore, as the arm I4 is actuated downwardly from an upper position toward the position shown in Fig. 1, the sleeve or roller ll moves along the slot l8 and forces the inner end of the lever down, causing the plate 1 to be raised against the bottom of the cup 8. The pin l6 moves beyond dead center and the crank therefore serves as latching means to latch the lever in the position shown in Fig. 1. This movement closes and holds the switch l2 closed to cause completion of the circuit to the motor 30, provided the switch I9 is closed. The switch l9 has a handle by means of which it may be manually operated to either open or closed position.

It will be understood that, if the switch I9 is open, closing of switch l2 will not startthe motor. On the other hand, if the switch I9 is closed, the actuation of the switch H by movement of the handle M will complete the circuit to the motor 30. A resilentbumper 20 serves as stopping means to step movement of the lever 4 about its pivot 3 and to eliminate the noise which would occur if the bumper 20 were not resilient.

The motor shaft 2| is surrounded by a collar 22 upon which is mounted a bevelled driving disc 23 adapted to engage a similar driving member 24 mounted upon the mixing shaft 25. A spring 26 between the motor casing and the disc 23 pushes 56 this disc outwardly along the shaft 2| to cause tight driving engagement between the discs 23 and 24. Because of this arrangement, these two members are kept in tight driving engagement regardless of wear. Member 26 is pinned or otherwise secured to the shaft 25 so as to cause same to rotate with the rotating disc 26. Upper and lower bearing members 26 and 21 furnish lateral supports for the shaft 25 which carries at its lower end the mixing head 28. This .latter comprises a strip of metal apertured in its central portion to be attached to the shaft 25 and having its two end portions shaped into reverse or compound curves. This type of agitating means results in extreme agitation of the fluid in the cup 8. A cross bar extends across the inside of the head 2 and has a boss 29 thereon within an opening in which the bearing 27 is mounted.

As is common, oil holes and oil lead pipes are provided for carrying oil to certain bearings. The axis of the motor shaft is inclined somewhat to a horizontal plane and the axis of the shaft 25 makes an angle of approximately eleven degrees (11) with a vertical line and approximately 'ninety degrees (90) with the axis of the shaft 2|.

From this it is apparent that the agitator shaft extends diagonally .across the cup from top to bottom and approximately from one side to the opposite side. This causes the fluid in the cup 8 to move in a more or less diagonal direction within the cup, which results in the fluid being mixed clear to the bottom of the cup. It is obvious that when the lever t is unlatched to permit the cup to be removed from the position shown in Fig. l and this lever turns about its pivot, in consequence, the switch is will be permitted to open, thus breaking the circuit to the motor and stopping the running of the agitator. The particular type of agitator used is very important for the reason that it is peculiarly adapted for the cutting up of ice cream, fruit, etc. which may have been put into the cup. It also causes foaming of the mixture. The transverse ribs of the cup furnish a good grip for the user thereof, serve as a measuring gauge, and prevent splashing during the mixing of the fluid. As the agitator 23 forces the fluid upwardly and outwardly, it flows along the surface of the cup, going into the grooves and out again so as to be forced to move transversely of the general upward direction of movement in the cup. This prevents the fluid from splashing against member Ill.

The resilient member 8 may be a coiled spring, a block of rubber, or other resilient substance, and the plate i may be a cross bar mounted on the lever d similarly to the plate 1 or in some other suitable manner.

It will of course be understood that the specific disclosure set forth herein may be departed from without departing from the spirit of this invention and from the scope of the appended claims.

Having now described my invention, I claim:

1. In a fluid mixer, a supporting structure having an overhanging head, against the under side of which a mixing cup may be pressed, a lever pivotally mounted on the supporting structure and having a cup support mounted loosely at its outer end and adapted to support said cup and press it against the head, the opposite end of said lever extending into said supporting structure, and means independently pivoted inside the said structure for engaging the lever within the supporting structure and turning said lever about its fulcrum to raise said cup support into position to press the cup against the head.

2. In a fluid mixer, a supporting unit comprising a base and a head, a lever pivotally carried by the base at one side thereof, an electric switch within the base and carried thereby in a position to be closed by movement of said lever in one.

direction, a crank carried by the base and having one arm extending into the base and connected to the leverto cause turning thereof about its pivot and closing of said switch, and a motor circuit controlled by said switch.

3. A structure as defined by claim 2 having a manual switch in the motor circuit so that the motor may be manually controlled as automatically.

4. In a fluid mixer; a support for a driving motor and a mixing unit; a leverpivoted on said support and, in one position, serving to support a mixing utensil; a plate pivotally connected to the outer end portion of the lever, said plate being capable of limited movement transversely of the lever; spring means tending to force said plate away from said lever; and a crank located externally of said support and extending into same, said crank being connected to said lever for operation thereof.

5. A structure as defined by claim 4 in combination with an electric circuit for said motor and a switch in said circuit, said switch being positioned to be actuated by said lever when it moves in one direction around its pivot.

6. In a fluid mixer, a hollow support for a driving motor and a mixing unit; a lever pivoted on said support and having one end projecting into the hollow thereof; a mixing cup support on the external end of said lever; the cup support yield ingly supporting a cup on the lever when the latter is turned into approximately horizontal position; and holding means for actuating the lever into approximately horizontal position andholding it therein.

'7. In a fluid mixer, a hollow support for a driving motor and a mixing unit; a lever pivoted on said support and having one end projecting into the hollow thereof; a crank mounted on said support and having one arm located inside of the a motor therein, said motor having a controlling circuit in which is located a switch, a slotted lever pivotally mounted in said stand with one of its arms projecting outside of the stand and adapted to serve as a support for a cup when in approxi mately horizontal position, and a crank mounted in a wall of said stand, the end of the lever receiving in its slot an arm of said crank, said arm of said crank, when it passes dead center, becoming latched in the lever slot, the inner end of the lever, when in held position, holding the switch closed.

LOUIS MYERS.

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